package net.minecraft.item.crafting;

import com.google.common.collect.Lists;
import java.util.List;
import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;

public class RecipeRepairItem implements IRecipe {
	/**
	 * Used to check if a recipe matches current crafting inventory
	 */
	public boolean matches(InventoryCrafting inv, World worldIn) {
		List<ItemStack> list = Lists.<ItemStack>newArrayList();

		for (int i = 0; i < inv.getSizeInventory(); ++i) {
			ItemStack itemstack = inv.getStackInSlot(i);

			if (itemstack != null) {
				list.add(itemstack);

				if (list.size() > 1) {
					ItemStack itemstack1 = (ItemStack) list.get(0);

					if (itemstack.getItem() != itemstack1.getItem() || itemstack1.stackSize != 1
							|| itemstack.stackSize != 1 || !itemstack1.getItem().isDamageable()) {
						return false;
					}
				}
			}
		}

		return list.size() == 2;
	}

	/**
	 * Returns an Item that is the result of this recipe
	 */
	public ItemStack getCraftingResult(InventoryCrafting inv) {
		List<ItemStack> list = Lists.<ItemStack>newArrayList();

		for (int i = 0; i < inv.getSizeInventory(); ++i) {
			ItemStack itemstack = inv.getStackInSlot(i);

			if (itemstack != null) {
				list.add(itemstack);

				if (list.size() > 1) {
					ItemStack itemstack1 = (ItemStack) list.get(0);

					if (itemstack.getItem() != itemstack1.getItem() || itemstack1.stackSize != 1
							|| itemstack.stackSize != 1 || !itemstack1.getItem().isDamageable()) {
						return null;
					}
				}
			}
		}

		if (list.size() == 2) {
			ItemStack itemstack2 = (ItemStack) list.get(0);
			ItemStack itemstack3 = (ItemStack) list.get(1);

			if (itemstack2.getItem() == itemstack3.getItem() && itemstack2.stackSize == 1 && itemstack3.stackSize == 1
					&& itemstack2.getItem().isDamageable()) {
				Item item = itemstack2.getItem();
				int j = item.getMaxDamage() - itemstack2.getItemDamage();
				int k = item.getMaxDamage() - itemstack3.getItemDamage();
				int l = j + k + item.getMaxDamage() * 5 / 100;
				int i1 = item.getMaxDamage() - l;

				if (i1 < 0) {
					i1 = 0;
				}

				return new ItemStack(itemstack2.getItem(), 1, i1);
			}
		}

		return null;
	}

	/**
	 * Returns the size of the recipe area
	 */
	public int getRecipeSize() {
		return 4;
	}

	public ItemStack getRecipeOutput() {
		return null;
	}

	public ItemStack[] getRemainingItems(InventoryCrafting inv) {
		ItemStack[] aitemstack = new ItemStack[inv.getSizeInventory()];

		for (int i = 0; i < aitemstack.length; ++i) {
			ItemStack itemstack = inv.getStackInSlot(i);

			if (itemstack != null && itemstack.getItem().hasContainerItem()) {
				aitemstack[i] = new ItemStack(itemstack.getItem().getContainerItem());
			}
		}

		return aitemstack;
	}
}
